The only eyedrops I've found that keeps my dry eyes moisturized; they are expensive but worth the price.
Note that the drops are used by taking off the cap and removing the little collar then puncturing a hole by closing the bottle top; then replace the collar and bottle top.

I bought these for my dog who has chronic dry eye, unfortunately I struggle getting any liquid in/near his eyes. I kept one vial for myself - with the dry indoor air and wearing contacs every day, I've used these drops several times. One day I must've gotten moisturizer or some other irritant in my eye and I flushed it out with these drops. They were a lifesaver - the burning stopped almost immediately. I keep a vial in my purse. Just be careful b/c the vial s/b discarded after 30 days. I may buy more and put them into a little spray bottle for my dog, which is probably my only chance of getting them in his eyes.

I bought this as a last ditch attemp to get some clear eyesight back after my eye doctor said their was nothing more she could do for me.... it works amazing but I have to use it all the time to keep my vision from going blurry again. So I use both bottles and then take a break for a month and then use another box, etc.